Following every meeting at which the review board acts upon an application, the chairman shall cause such action, and the reasons therefor in the case of final action, to be reduced to a written statement. The chairman may, within his discretion, consult with members of the review board voting for an action in order to confirm that such statement is in accordance with their views, or may place such statement before the review board for ratification. Such statement, when signed by the chairman, shall constitute official record of any action taken at the review board meeting and shall be included in or appended to the minutes of such meeting.